Java 文件传输助手的实现(单机版)

项目介绍

用 Java 实现单机版的文件传输助手项目。

涉及技术知识：

Swing 组件 I/O流 正则表达式 Java 事务处理机制

基础功能：

登录、注册 发送文字 发送图片、文件 文字、图片、文件的信息记录 历史记录的保存、回显及清空 信息发送的日期 退出

高级功能：

发送表情包 查看和查找历史记录 点击历史记录的文件图片能直接打开 拖拽输入信息、图片、文件

功能总览：

功能实现

一、登录

进入登录界面

未输入账号，登录弹出提示

输入账号，但未输入密码登录时弹出提示

账号或者密码输入错误登录时弹出提示

登录成功时进入主界面

登录界面：

package frame;import java.awt.Color;import java.awt.Container;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPasswordField;import javax.swing.JTextField;import function.Login;/** * 文件传输助手登陆界面 * * @author：360°顺滑 * * @date：2020/04/27 * */public class LoginFrame {public static JFrame loginJFrame;public static JLabel userNameLabel;public static JTextField userNameTextField;public static JLabel passwordLabel;public static JPasswordField passwordField;public static JButton loginButton;public static JButton registerButton;public static void main(String[] args) {// 创建窗体loginJFrame = new JFrame('文件传输助手');loginJFrame.setSize(500, 300);loginJFrame.setLocationRelativeTo(null);loginJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);ImageIcon image = new ImageIcon('src/pictures/logo.png');loginJFrame.setIconImage(image.getImage());loginJFrame.setResizable(false);// 创建内容面板Container container = loginJFrame.getContentPane();container.setLayout(null);// 创建“账号”标签userNameLabel = new JLabel('账号：');userNameLabel.setFont(new Font('行楷', Font.BOLD, 25));userNameLabel.setBounds(60, 25, 100, 100);container.add(userNameLabel);// 创建输入账号文本框userNameTextField = new JTextField();userNameTextField.setFont(new Font('黑体', Font.PLAIN, 23));userNameTextField.setBounds(133, 61, 280, 33);container.add(userNameTextField);// 创建“密码”标签passwordLabel = new JLabel('密码：');passwordLabel.setFont(new Font('行楷', Font.BOLD, 25));passwordLabel.setBounds(60, 90, 100, 100);container.add(passwordLabel);// 创建输入密码文本框passwordField = new JPasswordField();passwordField.setBounds(133, 127, 280, 33);passwordField.setFont(new Font('Arial', Font.BOLD, 23));container.add(passwordField);// 创建登录按钮loginButton = new JButton('登录');loginButton.setBounds(170, 185, 70, 40);loginButton.setFont(new Font('微软雅黑', 1, 18));loginButton.setBackground(Color.WHITE);loginButton.setFocusPainted(false);loginButton.setBorderPainted(false);container.add(loginButton);// 创建注册按钮registerButton = new JButton('注册');registerButton.setBounds(282, 185, 70, 40);registerButton.setFont(new Font('微软雅黑', 1, 18));registerButton.setBackground(Color.WHITE);registerButton.setFocusPainted(false);registerButton.setBorderPainted(false);container.add(registerButton);// 显示窗体loginJFrame.setVisible(true);addListen();}// 为按钮添加监听器public static void addListen() {// 为登录按钮添加监听事件loginButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// 创建Login对象并把LoginFrame的文本框内容作为参数传过去Login login = new Login(userNameTextField, passwordField);// 判断是否符合登录成功的条件if (login.isEmptyUserName()) {emptyUserName(loginJFrame);} else {if (login.isEmptyPassword()) {emptyPasswordJDialog(loginJFrame);} else {if (login.queryInformation()) {loginJFrame.dispose();MainFrame mainFrame = new MainFrame(userNameTextField.getText());mainFrame.init();} else {failedLoginJDialog(loginJFrame);}}}}});// 为注册按钮添加监听事件registerButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// 隐藏当前登录窗口loginJFrame.setVisible(false);// 打开注册窗口new RegisterFrame().init();}});}/* * 由于各个标签长度不同，所以为了界面美观，就写了三个弹出对话框而不是一个！ * */// 未输入账号时弹出提示对话框public static void emptyUserName(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('未输入账号！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(82, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 未输入密码时弹出提示对话框public static void emptyPasswordJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('未输入密码！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(82, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 账号或密码输入错误！public static void failedLoginJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('账号或密码输入错误！');jLabel.setFont(new Font('行楷', 0, 20));jLabel.setBounds(47, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}}

登录判断

package function;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.JPasswordField;import javax.swing.JTextField;/** * 文件传输助手登录功能 * * @author：360°顺滑 * * @date: 2020/04/29 * */public class Login {JTextField userNameTextField;JPasswordField passwordField;public Login(JTextField userNameTextField, JPasswordField passwordField) {this.userNameTextField = userNameTextField;this.passwordField = passwordField;}//判断账号是否为空方法public boolean isEmptyUserName() {if (userNameTextField.getText().equals(''))return true;elsereturn false;}//判断密码是否为空方法public boolean isEmptyPassword() {//操作密码框文本要先将其转换为字符串if (''.equals(new String(passwordField.getPassword())))return true;elsereturn false;}// 查询是否存在该账号密码public boolean queryInformation() {File file = new File('src/txt/userInformation.txt');FileReader fileReader = null;BufferedReader bufferedReader = null;boolean vis = false;try {fileReader = new FileReader(file);bufferedReader = new BufferedReader(fileReader);Pattern userNamePattern = Pattern.compile('用户名：.+');Pattern passwordPattern = Pattern.compile('密码：.+');String str1 = null;while ((str1 = bufferedReader.readLine()) != null) {Matcher userNameMatcher = userNamePattern.matcher(str1);if(userNameMatcher.find()) {if (('用户名：' + userNameTextField.getText()).equals(userNameMatcher.group())) {String str2 = bufferedReader.readLine();Matcher passwordMatcher = passwordPattern.matcher(str2);if(passwordMatcher.find()) {if (('密码：' + new String(passwordField.getPassword())).equals(passwordMatcher.group())) {vis = true;break;}}}}}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {bufferedReader.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}try {fileReader.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if (vis)return true;elsereturn false;}}

主界面

package frame;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.Font;import java.awt.dnd.DnDConstants;import java.awt.dnd.DropTarget;import java.awt.dnd.DropTargetListener;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import javax.swing.Box;import javax.swing.Icon;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JScrollPane;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;import function.DropTargetFile;import function.FileSend;import function.RecordsEcho;import function.TextSend;/** * 文件传输助手主界面 * * @author 360°顺滑 * * @date:2020/04/29 ~ 2020/04/30 * */public class MainFrame {String userName;public MainFrame() {};public MainFrame(String userName) {this.userName = userName;}private JButton fileButton;private JButton historicRecordsButton;private JButton sendButton;private JTextPane showPane;private JTextPane inputPane;private JButton expressionButton;private JScrollPane scrollShowPane;private Box buttonBox;private Box inputBox;private Box sendBox;private Box totalBox;private ImageIcon image;static JFrame mainFrame;public void init() {// 显示文本窗格showPane = new JTextPane();showPane.setSize(600, 400);showPane.setBackground(Color.WHITE);showPane.setEditable(false);showPane.setBorder(null);showPane.setFont(new Font('宋体', 0, 25));// 显示文本窗格添加滚动条scrollShowPane = new JScrollPane(showPane);// 表情包按?并添加图标Icon expressionIcon = new ImageIcon('src/pictures/expression.png');expressionButton = new JButton(expressionIcon);expressionButton.setBackground(Color.WHITE);expressionButton.setFocusPainted(false);expressionButton.setBorderPainted(false);// 文件按钮并添加图标Icon fileIcon = new ImageIcon('src/pictures/file.png');fileButton = new JButton(fileIcon);fileButton.setBackground(Color.WHITE);fileButton.setFocusPainted(false);fileButton.setBorderPainted(false);// 历史记录按钮并添加图标Icon historicRecordsIcon = new ImageIcon('src/pictures/historicRecords.png');historicRecordsButton = new JButton(historicRecordsIcon);historicRecordsButton.setBackground(Color.WHITE);historicRecordsButton.setFocusPainted(false);historicRecordsButton.setBorderPainted(false);// 按钮Box容器添加三个按钮buttonBox = Box.createHorizontalBox();buttonBox.setPreferredSize(new Dimension(1000, 50));buttonBox.add(Box.createHorizontalStrut(10));buttonBox.add(expressionButton);buttonBox.add(Box.createHorizontalStrut(10));buttonBox.add(fileButton);buttonBox.add(Box.createHorizontalStrut(10));buttonBox.add(historicRecordsButton);// 添加 “历史记录”按钮到右边框的距离 到buttonBox容器中buttonBox.add(Box.createHorizontalGlue());// 输入文本窗格inputPane = new JTextPane();inputPane.setSize(600, 300);inputPane.setFont(new Font('宋体', 0, 24));inputPane.setBackground(Color.WHITE);JScrollPane scrollInputPane = new JScrollPane(inputPane);// 输入区域的Box容器inputBox = Box.createHorizontalBox();inputBox.setPreferredSize(new Dimension(1000, 150));inputBox.add(scrollInputPane);// 发送按钮sendButton = new JButton('发送(S)');sendButton.setFont(new Font('行楷', Font.PLAIN, 20));sendButton.setBackground(Color.WHITE);sendButton.setFocusPainted(false);sendButton.setBorderPainted(false);// 发送Box容器并添加发送按钮sendBox = Box.createHorizontalBox();sendBox.setPreferredSize(new Dimension(1000, 50));sendBox.setBackground(Color.white);sendBox.add(Box.createHorizontalStrut(710));sendBox.add(Box.createVerticalStrut(5));sendBox.add(sendButton);sendBox.add(Box.createVerticalStrut(5));// 总的Box容器添加以上3个BoxtotalBox = Box.createVerticalBox();totalBox.setPreferredSize(new Dimension(1000, 250));totalBox.setSize(1000, 400);totalBox.add(buttonBox);totalBox.add(inputBox);totalBox.add(Box.createVerticalStrut(3));totalBox.add(sendBox);totalBox.add(Box.createVerticalStrut(3));// 设置主窗体mainFrame = new JFrame('文件传输助手');mainFrame.setSize(950, 800);mainFrame.setLocationRelativeTo(null);mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 改变窗体logoimage = new ImageIcon('src/pictures/logo.png');mainFrame.setIconImage(image.getImage());mainFrame.setLayout(new BorderLayout());// 添加窗体以上两个主要容器mainFrame.add(scrollShowPane, BorderLayout.CENTER);mainFrame.add(totalBox, BorderLayout.SOUTH);mainFrame.setVisible(true);// 添加监听器addListen();// 信息记录回显到展示面板RecordsEcho echo = new RecordsEcho(userName, showPane);echo.read();}// 提示对话框public static void warnJDialog(String information) {JDialog jDialog = new JDialog(mainFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocation(770, 400);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel(information);jLabel.setFont(new Font('微软雅黑', 0, 18));jLabel.setBounds(65, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);// 为弹出对话框按钮添加监听事件button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 添加监听事件@SuppressWarnings('unused')public void addListen() {/* * 为输入文本添加目标监听器 */// 创建拖拽目标监听器DropTargetListener listener = new DropTargetFile(inputPane);// 在 inputPane上注册拖拽目标监听器DropTarget dropTarget = new DropTarget(inputPane, DnDConstants.ACTION_COPY_OR_MOVE, listener, true);// 发送按钮监听事件sendButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent arg0) {// TODO Auto-generated method stubTextSend textSend = new TextSend(showPane, inputPane, userName);textSend.sendText();}});// 输入框添加键盘事件inputPane.addKeyListener(new KeyListener() {// 发生击键事件时被触发@Overridepublic void keyTyped(KeyEvent e) {}// 按键被释放时被触发@Overridepublic void keyReleased(KeyEvent e) {}// 按键被按下时被触发@Overridepublic void keyPressed(KeyEvent e) {// TODO Auto-generated method stub// 如果按下的是 Ctrl + Enter 组合键 则换行if ((e.getKeyCode() == KeyEvent.VK_ENTER) && e.isControlDown()) {Document document = inputPane.getDocument();try {document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}// 否则发送} else if (e.getKeyCode() == KeyEvent.VK_ENTER) {TextSend textSend = new TextSend(showPane, inputPane, userName);textSend.sendText();}}});// 表情包按钮监听事件expressionButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubnew EmojiFrame(showPane, userName).init();}});// 文件按钮监听事件fileButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent arg0) {// TODO Auto-generated method stubFileSend fileSend = new FileSend(userName, showPane, inputPane);fileSend.send();}});// 历史记录按钮监听事件historicRecordsButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubnew HistoricRecordsFrame(userName, showPane).init();}});}}

登录之前如果没有账号就得先注册一个，那么进入注册功能！

二、注册

点击登录界面的注册按钮，进入注册界面

未输入账号进行注册时

输入账号但未输入密码或者确认密码进行注册时

密码和确认密码不一致时进行注册

账号已存在进行注册时

注册成功时

点击确定按钮或者关闭窗口后返回登录界面

如果取消注册，直接点击返回按钮就可以返回登录界面了

注册界面

package frame;import java.awt.Color;import java.awt.Container;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPasswordField;import javax.swing.JTextField;import function.Register;/** * * 文件传输助手注册界面 * * @author 360°顺滑 * * @date: 2020/04/27 ~ 2020/04/28 * */public class RegisterFrame {public JFrame registerJFrame;public JLabel userNameLabel;public JTextField userNameTextField;public JLabel passwordLabel;public JPasswordField passwordField;public JLabel passwordAgainLabel;public JPasswordField passwordAgainField;public JButton goBackButton;public JButton registerButton;public void init() {// 创建窗体registerJFrame = new JFrame('文件传输助手');//registerJFrame.setTitle();registerJFrame.setSize(540, 400);registerJFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);ImageIcon image = new ImageIcon('src/pictures/logo.png');registerJFrame.setIconImage(image.getImage());registerJFrame.setLocationRelativeTo(null);registerJFrame.setResizable(false);// 创建内容面板Container container = registerJFrame.getContentPane();container.setLayout(null);// 创建“账号”标签userNameLabel = new JLabel('账号：');userNameLabel.setFont(new Font('行楷', Font.BOLD, 25));userNameLabel.setBounds(97, 25, 100, 100);container.add(userNameLabel);// 创建输入账号文本框userNameTextField = new JTextField();userNameTextField.setFont(new Font('黑体', Font.PLAIN, 23));userNameTextField.setBounds(170, 61, 280, 33);container.add(userNameTextField);// 创建“密码”标签passwordLabel = new JLabel('密码：');passwordLabel.setFont(new Font('行楷', Font.BOLD, 25));passwordLabel.setBounds(97, 90, 100, 100);container.add(passwordLabel);// 创建输入密码文本框passwordField = new JPasswordField();passwordField.setBounds(170, 125, 280, 33);passwordField.setFont(new Font('Arial', Font.BOLD, 23));container.add(passwordField);// 创建“确认密码”标签passwordAgainLabel = new JLabel('确认密码：');passwordAgainLabel.setFont(new Font('行楷', Font.BOLD, 25));passwordAgainLabel.setBounds(45, 150, 130, 100);container.add(passwordAgainLabel);// 创建确认密码文本框passwordAgainField = new JPasswordField();passwordAgainField.setBounds(170, 185, 280, 33);passwordAgainField.setFont(new Font('Arial', Font.BOLD, 23));container.add(passwordAgainField);// 创建返回按钮goBackButton = new JButton('返回');goBackButton.setBounds(200, 260, 70, 40);goBackButton.setFont(new Font('微软雅黑', 1, 18));goBackButton.setBackground(Color.WHITE);goBackButton.setFocusPainted(false);goBackButton.setBorderPainted(false);container.add(goBackButton);// 创建注册按钮registerButton = new JButton('注册');registerButton.setBounds(330, 260, 70, 40);registerButton.setFont(new Font('微软雅黑', 1, 18));registerButton.setBackground(Color.WHITE);registerButton.setFocusPainted(false);registerButton.setBorderPainted(false);container.add(registerButton);// 显示窗体registerJFrame.setVisible(true);addListen();}// 为按钮添加监听事件public void addListen() {// 为注册按钮添加监听事件registerButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// 创建register对象，同时将RegisterFrame的文本框内容作为参数传过去Register register = new Register(userNameTextField, passwordField, passwordAgainField);// 判断输入账号是否为空if (register.isEmptyUserName()) {emptyUserName(registerJFrame);} else {// 判断输入密码是否为空if (register.isEmptyPassword()) {emptyPasswordJDialog(registerJFrame);}else {// 判断密码和确认密码是否一致if (register.isSamePassWord()) {// 判断账号是否已存在if (!register.isExistAccount()) {// 注册成功！！！register.saveInformation();registerJFrame.dispose();userNameTextField.setText('');passwordField.setText('');passwordAgainField.setText('');new LoginFrame();LoginFrame.loginJFrame.setVisible(true);successRegisterJDialog(registerJFrame);} elseexistAccountJDialog(registerJFrame);} else {differentPasswordJDialog(registerJFrame);passwordField.setText('');passwordAgainField.setText('');}}}}});// 为返回按钮添加监听事件goBackButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// 销毁注册窗口registerJFrame.dispose();// 重新显示登录窗口new LoginFrame();LoginFrame.loginJFrame.setVisible(true);}});}/* * 由于各个标签长度不同，所以为了界面美观，就写了三个弹出对话框而不是一个！ * */// 未输入账号时弹出提示对话框public void emptyUserName(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('未输入用户名！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(73, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 未输入密码时弹出提示对话框public void emptyPasswordJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('未输入密码！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(73, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 密码和确认密码不一致时弹出提示框public void differentPasswordJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('输入密码不一致！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(63, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 已存在账号弹出提示对话框public void existAccountJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('该账号已存在！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(73, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjDialog.dispose();}});jDialog.setVisible(true);}// 成功注册对话框public void successRegisterJDialog(JFrame jFrame) {JDialog jDialog = new JDialog(jFrame, '提示');jDialog.setLayout(null);jDialog.setSize(300, 200);jDialog.setLocationRelativeTo(null);ImageIcon image = new ImageIcon('src/pictures/warn.png');jDialog.setIconImage(image.getImage());JLabel jLabel = new JLabel('注册成功！');jLabel.setFont(new Font('行楷', 0, 21));jLabel.setBounds(73, 0, 200, 100);jDialog.add(jLabel);JButton button = new JButton('确定');button.setBounds(105, 80, 70, 40);button.setFont(new Font('微软雅黑', 1, 18));button.setBackground(Color.WHITE);button.setFocusPainted(false);button.setBorderPainted(false);jDialog.add(button);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// 销毁提示对话框jDialog.dispose();}});jDialog.setVisible(true);}}

注册判断

package function;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.JPasswordField;import javax.swing.JTextField;/** * 文件传输助手注册功能 * * @author：360°顺滑 * * @date：2020/04/28 ~ 2020/04/29 * */public class Register {JTextField userNameTextField;JPasswordField passwordField;JPasswordField passwordAgainField;//将RegisterFrame参数传入进来public Register(JTextField userNameTextField, JPasswordField passwordField, JPasswordField passwordAgainField) {this.userNameTextField = userNameTextField;this.passwordField = passwordField;this.passwordAgainField = passwordAgainField;}//判断账号是否为空方法public boolean isEmptyUserName() {if (userNameTextField.getText().equals(''))return true;elsereturn false;}//判断密码是否为空方法public boolean isEmptyPassword() {//操作密码框文本要先将其转换为字符串if (''.equals(new String(passwordField.getPassword())) || ''.equals(new String(passwordAgainField.getPassword())))return true;elsereturn false;}//判断密码和输入密码是否一致方法public boolean isSamePassWord() {//操作密码框文本要先将其转换为字符串if (new String(passwordField.getPassword()).equals(new String(passwordAgainField.getPassword())))return true;elsereturn false;}//判断账号是否已存在方法public boolean isExistAccount() {File file = new File('src/txt/userInformation.txt');FileReader fileReader = null;BufferedReader bufferedReader = null;boolean vis = false;try {fileReader = new FileReader(file);bufferedReader = new BufferedReader(fileReader);//正则表达式Pattern pattern = Pattern.compile('用户名：.+');String str = null;while ((str = bufferedReader.readLine()) != null) {Matcher matcher = pattern.matcher(str);if (matcher.find()) {if (('用户名：' + userNameTextField.getText()).equals(matcher.group())) {vis = true;break;}}}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {if (bufferedReader != null) {try {bufferedReader.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}if (fileReader != null) {try {fileReader.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}if (!vis) {return false;} else {return true;}}//保存信息到本地public void saveInformation() {File file = new File('src/txt/userInformation.txt');FileWriter fileWriter = null;BufferedWriter bufferedWriter = null;try {fileWriter = new FileWriter(file, true);bufferedWriter = new BufferedWriter(fileWriter);bufferedWriter.write('用户名：' + userNameTextField.getText());bufferedWriter.newLine();bufferedWriter.write('密码：' + new String(passwordField.getPassword()));bufferedWriter.newLine();bufferedWriter.flush();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {if (bufferedWriter != null) {try {bufferedWriter.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if (fileWriter != null) {try {fileWriter.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}

三、发送文字

输入文字后可以点击发送按钮发送，也可以通过键盘Enter键发送

发送空白信息时弹出提示，提示框代码在主界面类里

发送文本：

package function;import java.text.SimpleDateFormat;import java.util.Date;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.JFrame;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;import frame.MainFrame;/** * 实现发送消息，并保存到信息记录 * * @author 360°顺滑 * * @date 2020/05/01 * */public class TextSend {JFrame mainFrame;JTextPane textShowPane;JTextPane textInputPane;String userName;public TextSend(JTextPane textShowPane, JTextPane textInputPane, String userName) {this.textShowPane = textShowPane;this.textInputPane = textInputPane;this.userName = userName;}public void sendText() {if (!(''.equals(textInputPane.getText()))) {// 获取日期并设置日期格式Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM-dd hh:mm:ss');SimpleAttributeSet attributeSet = new SimpleAttributeSet();// 输入文本String inputText = dateFormat.format(date) + 'n';Pattern pattern = Pattern.compile('.+[.].+');Matcher matcher = pattern.matcher(textInputPane.getText());// 判断是否为文件boolean isFile = false;// 判断是否为第一个文件boolean isFirst = true;while (matcher.find()) {isFile = true;// 获得文件名int index = matcher.group().lastIndexOf('');String fileName = matcher.group().substring(index + 1);// 图片的情况if (matcher.group().endsWith('.png') || matcher.group().endsWith('.jpg')|| matcher.group().endsWith('.jpeg') || matcher.group().endsWith('gif')) {Document document = textShowPane.getDocument();try {if (isFirst) {isFirst = false;document.insertString(document.getLength(), inputText, new SimpleAttributeSet());new RecordsEcho(userName, textShowPane).writeImage(matcher.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());}else {new RecordsEcho(userName, textShowPane).writeImage(matcher.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());}} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}} else {// 文件的情况Document document = textShowPane.getDocument();try {if (isFirst) {isFirst = false;document.insertString(document.getLength(), inputText, new SimpleAttributeSet());new RecordsEcho(userName, textShowPane).writeFile(matcher.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());}else {new RecordsEcho(userName, textShowPane).writeFile(matcher.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());}} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}if (!isFile) {// 实现发送文本太长自动换行String str = '';for (int i = 0; i < textInputPane.getText().length(); i++) {if (i != 0 && i % 15 == 0)str += 'n';str += textInputPane.getText().charAt(i);}Document document = textShowPane.getDocument();try {document.insertString(document.getLength(), inputText + str + 'nn', attributeSet);} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}// 把信息保存到对应的用户本地历史记录txt文件SaveRecords records = new SaveRecords(userName, inputText + textInputPane.getText() + 'nn');records.saveRecords();textInputPane.setText('');} else {new MainFrame();MainFrame.warnJDialog('不能发送空白信息！');}}}

其实这个类不单单只是发送文本这么简单，因为后续实现了拖拽发送文件，拖拽后会在输入框自动输入文件路径，实现的代码有关联，就写在这里了。

四、发送图片 、文件和表情包

图片文件的发送主要是通过打开本地浏览发送的

发送文件、图片、表情包：

package function;import java.awt.Color;import java.awt.Desktop;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import javax.swing.Icon;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFileChooser;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;/** * 实现打开文件按钮发送图片文件表情包 * * @author 360°顺滑 * * @date 2020/05/01 */public class FileSend {String userName;String path;String fileName;JTextPane textShowPane;JTextPane textInputPane;public FileSend() {};public FileSend(String userName, JTextPane textShowPane, JTextPane textInputPane) {this.userName = userName;this.textShowPane = textShowPane;this.textInputPane = textInputPane;}// 弹出选择框并判断发送的是文件还是图片public void send() {// 点击文件按钮可以打开文件选择框JFileChooser fileChooser = new JFileChooser();int result = fileChooser.showOpenDialog(null);if (result == JFileChooser.APPROVE_OPTION) {// 被选择文件路径path = fileChooser.getSelectedFile().getAbsolutePath();// 被选择文件名称fileName = fileChooser.getSelectedFile().getName();// 选择的是图片if (path.endsWith('.png') || path.endsWith('.jpg') || path.endsWith('.gif') || path.endsWith('.jpeg')) {sendImage(path, fileName);} else {sendFile(path, fileName);}}}// 发送图片public void sendImage(String path, String fileName) {// 获取图片ImageIcon imageIcon = new ImageIcon(path);// 如果图片比整个界面大则调整大小int width, height;if (imageIcon.getIconWidth() > 950 || imageIcon.getIconHeight() > 400) {width = 600;height = 250;} else {width = imageIcon.getIconWidth();height = imageIcon.getIconHeight();}// 设置图片大小imageIcon.setImage(imageIcon.getImage().getScaledInstance(width, height, 0));// 获取日期Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM--dd HH:mm:ss');String input = dateFormat.format(date) + 'n';// 为图片名称添加按钮，用于打开图片JButton button = new JButton(fileName);button.setFont(new Font('宋体', Font.PLAIN, 20));button.setBackground(Color.WHITE);button.setBorderPainted(false);button.setFocusPainted(false);// 获取整个展示面板的内容，方便图片文件的插入Document document = textShowPane.getDocument();try {// 插入日期document.insertString(document.getLength(), input, new SimpleAttributeSet());// 插入图片textShowPane.insertIcon(imageIcon);// 换行document.insertString(document.getLength(), 'n', new SimpleAttributeSet());// 插入按钮，也就是图片名称textShowPane.insertComponent(button);document.insertString(document.getLength(), 'nn', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 为按钮添加点击事件button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubtry {// 实现打开文件功能File file = new File(path);Desktop.getDesktop().open(file);} catch (IOException e2) {// TODO Auto-generated catch blocke2.printStackTrace();}}});// 输入框重新清空textInputPane.setText('');// 保存路径到对应的账号信息里String saveText = input + path + 'nn';SaveRecords records = new SaveRecords(userName, saveText);records.saveRecords();}// 发送文件public void sendFile(String path, String fileName) {// 获取固定文件图标Icon fileImage = new ImageIcon('src/pictures/document.png');// 获取日期Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM-dd HH:mm:ss');String input = dateFormat.format(date) + 'n';// 为名称添加按钮JButton button = new JButton(fileName);button.setFont(new Font('宋体', Font.PLAIN, 20));button.setBackground(Color.WHITE);button.setBorderPainted(false);button.setFocusPainted(false);// 获取面板内容Document document = textShowPane.getDocument();try {document.insertString(document.getLength(), input, new SimpleAttributeSet());textShowPane.insertIcon(fileImage);textShowPane.insertComponent(button);document.insertString(document.getLength(), 'nn', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}//为名称按钮添加监听事件，实现打开功能button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubtry {// 实现打开文件功能File file = new File(path);Desktop.getDesktop().open(file);} catch (IOException e2) {// TODO Auto-generated catch blocke2.printStackTrace();}}});textInputPane.setText('');// 保存路径到对应的账号信息里String saveText = input + path + 'nn';SaveRecords records = new SaveRecords(userName, saveText);records.saveRecords();}//发送表情包功能public void sendEmoji(String path) {// 获取图片ImageIcon imageIcon = new ImageIcon(path);// 获取日期Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM--dd HH:mm:ss');String input = dateFormat.format(date) + 'n';// 获取整个展示面板的内容，方便图片文件的插入Document document = textShowPane.getDocument();try {// 插入日期document.insertString(document.getLength(), input, new SimpleAttributeSet());// 插入图片textShowPane.insertIcon(imageIcon);document.insertString(document.getLength(), 'nn', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 输入框重新清空textInputPane.setText('');}}

五、保存历史记录

发送文字、图片、文件和表情包的信息（文字或路径）都要保存到本地，以便历史信息的回显，查找历史信息。

package function;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;/** * 该类实现保存信息记录 * * * @author 360°顺滑 * * @date 2020/05/01 * */public class SaveRecords {String userName;String input;public SaveRecords(String userName,String input) {this.userName = userName;this.input = input;}public void saveRecords() {String path = 'src/txt/' + userName + '.txt';File file = new File(path);// 文件不存在就创建一个if (!file.exists()) {try {file.createNewFile();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}FileWriter fileWriter = null;BufferedWriter bufferedWriter = null;try {fileWriter = new FileWriter(file,true);bufferedWriter = new BufferedWriter(fileWriter);bufferedWriter.write(input);bufferedWriter.flush();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {if (bufferedWriter != null) {try {bufferedWriter.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if (fileWriter != null) {try {fileWriter.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}

六、历史记录回显

登录后进入主界面或者进入历史记录界面会看到该账号以前发送过的信息记录

历史记录回显：

package function;import java.awt.Color;import java.awt.Desktop;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.Icon;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;/** * * 该类实现历史记录回显 * * @author 360°顺滑 * * @date 2020/05/02 * */public class RecordsEcho {private String userName;private JTextPane showPane;public RecordsEcho(String userName, JTextPane showPane) {this.userName = userName;this.showPane = showPane;}// 将用户的信息记录回显到展示面板public void read() {// 对应账号的信息记录文本File file = new File('src/txt/' + userName + '.txt');// 文件不存在就创建一个if (!file.exists()) {try {file.createNewFile();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}FileReader fileReader = null;BufferedReader bufferedReader = null;try {fileReader = new FileReader(file);bufferedReader = new BufferedReader(fileReader);// 正则表达式Pattern pattern = Pattern.compile('.+[.].+');String str = null;while ((str = bufferedReader.readLine()) != null) {Matcher matcher = pattern.matcher(str);// 如果是文件或图片if (matcher.find()) {// 获得文件名int index = str.lastIndexOf('');String fileName = str.substring(index + 1);// 图片的情况if (str.endsWith('.png') || str.endsWith('.jpg') || str.endsWith('.jpeg') || str.endsWith('gif')) {Pattern pattern1 = Pattern.compile('[emoji_].+[.].+');Matcher matcher1 = pattern1.matcher(fileName);// 如果是表情包if (matcher1.find()) {writeEmoji(str);} else {writeImage(str, fileName);}} else {// 文件的情况writeFile(str, fileName);}} else {// 如果是文本则直接写入writeText(str);}}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {bufferedReader.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}try {fileReader.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}// 把文本显示在展示面板public void writeText(String str) {String s = '';for (int i = 0; i < str.length(); i++) {if (i != 0 && i % 30 == 0)s += 'n';s += str.charAt(i);}Document document = showPane.getDocument();try {document.insertString(document.getLength(), s + 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public void writeEmoji(String path) {// 获取图片ImageIcon imageIcon = new ImageIcon(path);// 获取整个展示面板的内容，方便图片文件的插入Document document = showPane.getDocument();try {// 插入图片showPane.insertIcon(imageIcon);// 换行document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}// 把图片显示在展示面板public void writeImage(String path, String fileName) {// 获取图片ImageIcon imageIcon = new ImageIcon(path);// 如果图片比整个界面大则调整大小int width, height;if (imageIcon.getIconWidth() > 950 || imageIcon.getIconHeight() > 400) {width = 600;height = 250;} else {width = imageIcon.getIconWidth();height = imageIcon.getIconHeight();}// 设置图片大小imageIcon.setImage(imageIcon.getImage().getScaledInstance(width, height, 0));// 为图片名称添加按钮，用于打开图片JButton button = new JButton(fileName);button.setFont(new Font('宋体', Font.PLAIN, 20));button.setBackground(Color.WHITE);button.setBorderPainted(false);button.setFocusPainted(false);// 获取整个展示面板的内容，方便图片文件的插入Document document = showPane.getDocument();try {// 插入图片showPane.insertIcon(imageIcon);// 换行document.insertString(document.getLength(), 'n', new SimpleAttributeSet());// 插入按钮，也就是图片名称showPane.insertComponent(button);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 为按钮添加点击事件button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubtry {// 实现打开文件功能File file = new File(path);Desktop.getDesktop().open(file);} catch (IOException e2) {// TODO Auto-generated catch blocke2.printStackTrace();}}});}// 把文件显示在展示面板中public void writeFile(String path, String fileName) {// 获取固定文件图标Icon fileImage = new ImageIcon('src/pictures/document.png');// 为名称添加按钮JButton button = new JButton(fileName);button.setFont(new Font('宋体', Font.PLAIN, 20));button.setBackground(Color.WHITE);button.setBorderPainted(false);button.setFocusPainted(false);// 获取面板内容Document document = showPane.getDocument();try {showPane.insertIcon(fileImage);showPane.insertComponent(button);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubtry {// 实现打开文件功能File file = new File(path);Desktop.getDesktop().open(file);} catch (IOException e2) {// TODO Auto-generated catch blocke2.printStackTrace();}}});}}

七、发送表情包

通过主界面表情包按钮可以打开表情包窗口

点击表情包，可以发送表情包

表情包界面

package frame;import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.text.SimpleDateFormat;import java.util.Date;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;import function.SaveRecords;/** * 该类实现表情包窗体 * * @author 360°顺滑 * * @date 2020/05/03 * */public class EmojiFrame {//展示面板private JTextPane showPane;//表情包按钮private JButton[] buttons = new JButton[55];//表情包图片private ImageIcon[] icons = new ImageIcon[55];//表情包对话框private JDialog emojiJDialog;//账号private String userName;public EmojiFrame(JTextPane showPane,String userName) {this.showPane = showPane;this.userName = userName;}//表情包窗体public void init() {//用对话框来装表情包emojiJDialog = new JDialog();emojiJDialog.setTitle('表情包');emojiJDialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);emojiJDialog.setLayout(new GridLayout(6, 9));emojiJDialog.setBounds(490, 263, 500, 400);emojiJDialog.setBackground(Color.WHITE);ImageIcon image = new ImageIcon('src/pictures/emoji.png');emojiJDialog.setIconImage(image.getImage());//表情包用按钮来实现，主要是可以添加监听事件，点击后可以实现发送for (int i = 1; i <= 54; i++) {String path = 'src/pictures/emoji_' + i + '.png';icons[i] = new ImageIcon(path);buttons[i] = new JButton(icons[i]);buttons[i].setBackground(Color.WHITE);buttons[i].setBorder(null);buttons[i].setBorderPainted(false);buttons[i].setSize(20, 20);buttons[i].setFocusPainted(false);emojiJDialog.add(buttons[i]);}emojiJDialog.setVisible(true);//添加监听事件addListen();}//监听事件public void addListen() {//为每一个按钮添加监听事件for(int i=1;i<=54;i++) {String path = 'src/pictures/emoji_' + i + '.png';buttons[i].addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub//获取图片ImageIcon imageIcon = new ImageIcon(path);// 获取日期Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM-dd HH:mm:ss');String input = dateFormat.format(date) + 'n';Document document = showPane.getDocument();try {//写入日期document.insertString(document.getLength(), input, new SimpleAttributeSet());//插入图片showPane.insertIcon(imageIcon);//换行document.insertString(document.getLength(), 'nn', new SimpleAttributeSet());} catch (BadLocationException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}// 保存路径到对应的账号信息里，因为用的是绝对路径，所以要根据实际来修改String saveText = input + 'D:eclipse jeeFileTransfer' + path + 'nn';SaveRecords records = new SaveRecords(userName, saveText);records.saveRecords();emojiJDialog.setVisible(false);}});}}}

发送表情包

//该方法写在FileSend类//发送表情包功能public void sendEmoji(String path) {// 获取图片ImageIcon imageIcon = new ImageIcon(path);// 获取日期Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('yyyy-MM--dd HH:mm:ss');String input = dateFormat.format(date) + 'n';// 获取整个展示面板的内容，方便图片文件的插入Document document = textShowPane.getDocument();try {// 插入日期document.insertString(document.getLength(), input, new SimpleAttributeSet());// 插入图片textShowPane.insertIcon(imageIcon);document.insertString(document.getLength(), 'nn', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 输入框重新清空textInputPane.setText('');}

八、查看历史

记录通过主界面的历史记录按钮可以打开历史记录窗口

历史记录界面

package frame;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.Box;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextField;import javax.swing.JTextPane;import function.ClearRecords;import function.FindRecords;import function.RecordsEcho;/** * 该类实现历史记录窗口 * * @author 360°顺滑 * * @date 2020/05/02 * */public class HistoricRecordsFrame {private String userName;private JTextPane textShowPane;private JFrame historicRecordsFrame;private JButton findRecordsButton;private JButton clearRecordsButton;private JTextField searchTextField;private JTextPane recordsShowPane;private Box clearBox;public HistoricRecordsFrame(String userName,JTextPane textShowPane) {this.userName = userName;this.textShowPane = textShowPane;}public void init() {// 搜索文本框searchTextField = new JTextField();searchTextField.setFont(new Font('宋体', 0, 25));// 查找记录按钮findRecordsButton = new JButton('查找记录');findRecordsButton.setFont(new Font('行楷', Font.PLAIN, 20));findRecordsButton.setBackground(Color.WHITE);findRecordsButton.setBorderPainted(false);findRecordsButton.setFocusPainted(false);// 将搜索文本框和搜索按钮放入Box容器Box searchBox = Box.createHorizontalBox();searchBox.setPreferredSize(new Dimension(900, 47));searchBox.setBackground(Color.white);searchBox.add(Box.createHorizontalStrut(35));searchBox.add(searchTextField);searchBox.add(Box.createHorizontalStrut(20));searchBox.add(findRecordsButton);searchBox.add(Box.createHorizontalStrut(25));// 显示文本窗格recordsShowPane = new JTextPane();recordsShowPane.setSize(900, 600);recordsShowPane.setBackground(Color.WHITE);recordsShowPane.setEditable(false);recordsShowPane.setBorder(null);recordsShowPane.setFont(new Font('宋体', 0, 25));// 显示文本窗格添加滚动条JScrollPane scrollShowPane = new JScrollPane(recordsShowPane);// 清空记录按钮clearRecordsButton = new JButton('清空记录');clearRecordsButton.setFont(new Font('行楷', Font.PLAIN, 20));clearRecordsButton.setBackground(Color.WHITE);clearRecordsButton.setBorderPainted(false);clearRecordsButton.setFocusable(false);// Box容器并添加清空记录按钮clearBox = Box.createHorizontalBox();clearBox.setPreferredSize(new Dimension(1000, 60));clearBox.setBackground(Color.white);clearBox.add(Box.createVerticalStrut(5));clearBox.add(clearRecordsButton);clearBox.add(Box.createVerticalStrut(5));// 设置主窗体historicRecordsFrame = new JFrame('历史记录');historicRecordsFrame.setSize(900, 700);historicRecordsFrame.setLocationRelativeTo(null);historicRecordsFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);// 改变窗体logoImageIcon image = new ImageIcon('src/pictures/historicRecordsLogo.png');historicRecordsFrame.setIconImage(image.getImage());historicRecordsFrame.setLayout(new BorderLayout());// 添加窗体以上两个主要容器historicRecordsFrame.add(searchBox, BorderLayout.NORTH);historicRecordsFrame.add(scrollShowPane, BorderLayout.CENTER);historicRecordsFrame.add(clearBox, BorderLayout.SOUTH);historicRecordsFrame.setVisible(true);addListen();RecordsEcho recordsEcho = new RecordsEcho(userName, recordsShowPane);recordsEcho.read();}//添加按钮监听事件public void addListen() {//清空历史记录监听事件clearRecordsButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubnew ClearRecords(userName,textShowPane,recordsShowPane).clear();}});//查找记录监听事件findRecordsButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubFindRecords findRecords = new FindRecords(recordsShowPane,userName,searchTextField.getText());findRecords.find();}});}}

历史记录回显的代码上面已经给了，这里就不贴了。

还有一点功能值得一提，就是点击历史记录中的图片文件可以直接打开！

九、查找历史记录

输入关键字点击查找记录按钮可以实现历史记录的查找，找不到则显示“无相关记录！”

查找历史记录

package function;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.swing.JTextPane;import javax.swing.text.BadLocationException;import javax.swing.text.Document;import javax.swing.text.SimpleAttributeSet;/** * 该类实现查找历史记录 * * 这段代码说实话，写得有点糟，本来后期要优化，但是有点难搞，就这样吧，将就着看！ * * * @author 360°顺滑 * * @date 2020/05/02 */public class FindRecords {private JTextPane recordsShowPane;private String userName;private String keywords;public FindRecords(JTextPane recordsShowPane, String userName, String keywords) {this.recordsShowPane = recordsShowPane;this.userName = userName;this.keywords = keywords;}// 该方法包括查找文本、图片、文件，因为要交叉使用，所以写在一起了public void find() {// 如果查找的不为空if (!(keywords.equals(''))) {// 查找相关账号历史记录File file = new File('src/txt/' + userName + '.txt');FileReader fileReader = null;BufferedReader bufferedReader = null;try {fileReader = new FileReader(file);bufferedReader = new BufferedReader(fileReader);String str = '';String str1 = null;// 先把所有文本找到while ((str1 = bufferedReader.readLine()) != null) {if (str1.equals(''))str += 'n';elsestr = str + str1 + 'n';}// 正则表达式匹配要找的内容Pattern pattern = Pattern.compile('.+n.*' + keywords + '.*nn');Matcher matcher = pattern.matcher(str);// 标记有没有找到boolean isExist = false;// 标记是否第一次找到boolean oneFind = false;// 如果找到了while (matcher.find()) {isExist = true;// 正则表达式匹配是否为文件图片路径Pattern pattern1 = Pattern.compile('.+[.].+');Matcher matcher1 = pattern1.matcher(matcher.group());// 如果是文件或者图片if (matcher1.find()) {// 截取日期int index3 = matcher.group().indexOf('n');String date = matcher.group().substring(0, index3);// 获得文件名int index1 = matcher.group().lastIndexOf('');int index2 = matcher.group().lastIndexOf('nn');String fileName = matcher.group().substring(index1 + 1, index2);// 图片的情况if (fileName.endsWith('.png') || fileName.endsWith('.jpg') || fileName.endsWith('.jpeg')|| fileName.endsWith('gif')) {Pattern pattern2 = Pattern.compile('[emoji_].+[.].+');Matcher matcher2 = pattern2.matcher(fileName);// 如果是表情包则不需要添加名称if (matcher2.find()) {if (!oneFind) {// 写入日期recordsShowPane.setText(date + 'n');// 插入表情包和名称RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeEmoji(matcher1.group());Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}oneFind = true;} else { // 不是第一次就直接写入Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), date + 'n',new SimpleAttributeSet());RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeEmoji(matcher1.group());document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}// 不是表情包的图片else {// 如果是第一次找到，要先清空再写入if (!oneFind) {// 写入日期recordsShowPane.setText(date + 'n');// 插入图片和名称RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeImage(matcher1.group(), fileName);// 换行Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 标记不是第一次了oneFind = true;} else { // 不是第一次找到就直接写入Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), date + 'n',new SimpleAttributeSet());RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeImage(matcher1.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}} else { // 文件的情况// 第一次找到if (!oneFind) {// 清空并写入日期recordsShowPane.setText(date + 'n');// 插入文件图片以及名称RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeFile(matcher1.group(), fileName);// 换行Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}oneFind = true;} else { // 不是第一次找到Document document = recordsShowPane.getDocument();try {document.insertString(document.getLength(), date + 'n', new SimpleAttributeSet());RecordsEcho echo = new RecordsEcho(fileName, recordsShowPane);echo.writeFile(matcher1.group(), fileName);document.insertString(document.getLength(), 'n', new SimpleAttributeSet());} catch (BadLocationException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}} else { // 查找的是文本String s = '';for(int i = 0; i < matcher.group().length(); i++) {//因为查找到的字符串包含日期，所以要从20开始if(i>20 && (i-20) % 30 == 0)s += 'n';s